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marin [14]
3 years ago
13

Which statement describes the role of consumers in an ecosystem?

Chemistry
2 answers:
SOVA2 [1]3 years ago
5 0
Either C or D. Those r the answers that make more sense.
dangina [55]3 years ago
3 0
D is the correct answer
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The density of solid cu is 8.96 g/cm3. how many atoms are present per cubic centimeter of cu?
svp [43]
Since there is 9.47 x 1021 atoms of copper in 1 gram, and 8.96 grams/cc is the density of copper, then 9.47 x 8.96 =84.85 x 1021 atoms of copper in the one cubic centimeter of copper.
3 0
3 years ago
Freezing and thawing water can cause a rock to break down into smaller pieces. Which part of the rock cycle is this an example o
zloy xaker [14]

Answer:

Deposition

Explanation:

It’s breaking down the rock :]

4 0
3 years ago
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What is 2.15•(6.022•10^23)
sp2606 [1]

Answer:

The answer is 1.29473 x 10^24

Explanation:

6 0
3 years ago
1 Mothers ages 8 years more than twice her daughter's
Anit [1.1K]
<h3>♫ :::::::::::::::::::::::::::::: // Hello There ! //  :::::::::::::::::::::::::::::: ♫</h3>

➷  We can use the information to form an equation, which we can solve later

M = 2x + 8

Simply substitute the daughter's age into x:

M = 2(56) + 8

Now solve:

M = 120

<h3><u>❄️</u></h3>

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8 0
3 years ago
if the percent yield ofr the following reaction is 75% and 45.0g of NO2 are consumed with ercess water in the reaction. how many
NISA [10]

Answer:

30.8 grams of nitric acid are produced

Explanation:

Let's state the reaction:

3 NO₂ + H₂O → 2 HNO₃ + NO

If water is the excess reagent, then the limiting is the gas.

We convert the mass to moles:

45 g . 1 mol/ 46 g = 0.978 moles

Ratio is 3:2. 3 moles of gas can produce 2 moles of acid

Then, 0.978 moles may produce (0.978 . 2) /3 = 0.652 moles of acid

This is the 100% yield, but in this case, the percent yield is 75%

0.652 moles . 0.75 = 0.489 moles

Let's convert the moles to mass → 0.489 mol . 63g / 1mol = 30.8 g

6 0
3 years ago
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